title: Family size and evolution of Rh polymorphism.
mesh_terms: D000483:Alleles; D005191:Family Characteristics; D005787:Gene Frequency; D006801:Humans; D008957:Models, Genetic; D011110:Polymorphism, Genetic; D012204:Rh-Hr Blood-Group System / Q000235:genetics*
chemical_list: D012204:Rh-Hr Blood-Group System